Radishes are primarily consumed on salads in this Vonada household. Sometimes some julienned radishes show up on a sandwich, but that's the extent of our usage. I've read that people eat radish greens, but that sounds like a terrible idea to me.
Planting Time: Mid MAR-Late APR (in central Maryland)
Harvest Time: APR-JUN (in central Maryland)
Spacing: 2-6" in row
Radishes can be started early and don't require much maintenance. They grow very fast (less than one month) and don't require a dedicated space since they grow so much faster than most plants. Some sources suggest planting them between other plants - carrots or peas, for example, because they'll be ready long before the other crops. If you're planting them in their own space, aim for a 2 inch final spacing, which can start with 1/2 inch spacing before thinning.
Unlike other brassicas, radishes probably don't need a lot of nitrogen - nitrogen promotes leaf growth, but we want root growth for radishes.
Don't preserve radishes for too long. Take off the leaves and store in the fridge in a sealed bag, dirt and all. Definitely do not wash them until you're ready to eat. They may last a whole month this way.
Matt's Garden Notes:
2012: Radishes grew well in the ground between snap peas. Bugs and bunnies really got to the greens, but the bulbs grew very well.
Recipes using Radishes: